\(\tilde{y}\)  and \(\hat{y}\)  are concatenated to get \(y \in \mathbb {R}^{6M+3}\) . We incorporate the parameter \(\tau \in [0,1]\)  as in [1]}, to control the randomness or the variety in the generated samples. Mathematically writing, the parameters \(\hat{q}_k\) , \(\sigma _x^2\)  and \(\sigma _y^2\)  would be replaced by \(\frac{\hat{q}_k}{\tau }\) , \(\sigma _x^2\tau \)  and \(\sigma _y^2\tau \)  respectively.
